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Multiplication and Division
1.
Use the model above to solve the following problem.
2×4=?
A. 10
B. 8
C. 4
D. 6
2. Use the model below to find 2 × 10.
A. 12
B. 18
C. 22
D. 20
3. There were 5 choirs at the choir concert on Friday night. Each choir sang 4 songs.
Which shows how many songs the choirs sang in all?
A. 5 × 4
B. 5 -- 4
C. 5 × 5
D. 5 + 4
4. Directions: Write the correct answer in each box. Use numerals instead of words.
Look at the expression.
Fill in the blanks in the story problem to match the expression. Then, solve the expression.
Albert read 8 paragraphs that each had
read
total sentences.
sentences in it. Albert
5. Directions: Write the correct answer from each box.
Hector planted 27 tomato seeds in his vegetable garden. He planted them in 3 equal rows.
Complete the equation to find how many tomato seeds Hector planted in each row.
27 seeds
3 equal rows is
seeds in each row.
6. Directions: Write the correct answer in each box. Use numerals instead of words.
Look at the expression.
Fill in the blanks in the story to match the expression. Then, find the value of the expression.
Colin filled 7 bags with
cookies each. Colin put
total cookies in bags.
9. Directions: Select ALL the correct answers.
Brett wrote the expression below.
Which story problems match Brett's expression?
Julie has 6 cans of pencils. Each can holds 9 pencils. How many pencils does Julie have in all?
Julie has 6 cans of pencils. She also has 9 boxes of pencils. How many pencils does Julie have in all?
Greg filled 6 boxes with 9 cookies each. How many cookies did Greg put into the boxes?
There are 6 bags of candy and each bag holds 9 pieces of candy. How many pieces of candy are there
in all?
There are 6 bags of chocolate candy and 9 pieces of fruit candy. How many pieces of candy are there in
all?
Greg filled 6 boxes and 9 bags each with cookies. How many cookies did Greg put
into the boxes?
10. Howie used the repeated addition below to solve a multiplication problem. Which multiplication problem did he
solve?
9+9+9+9+9
A. 8 × 9 = 72
B. 7 × 9 = 63
C. 5 × 9 = 45
D. 6 × 9 = 54
Answers
1. B
2. D
3. A
4. ---5. ---6. ---7. ---8. ---9. ---10. C
Explanations
1. There are two groups of four cookies.
Multiply the two groups by the four cookies to find the total number of cookies.
factor
2
number of
groups
factor
×
4
cookies in
each group
product
=
8
total number
of cookies
So, 2 × 4 = 8.
2. The model below shows two rows of ten squares, or two groups of ten squares.
Multiply the two groups by the ten squares in each group to find the total number of squares.
factor
2
number of
groups
factor
×
10
product
=
squares in
each group
20
total number
of squares
So, 2 × 10 = 20.
3. To figure out the total number of songs at the concert, two pieces of information are needed: how many choirs
were at the concert and how many songs each choir sang.
In this problem, there were 5 choirs and each choir sang 4 songs.
To find the total, add 4 together 5 times, or multiply 5 times 4.
5×4
4.
The expression shows 8 times 6. This means that there are 8 groups of 6 objects. Each paragraph Albert read is a
group of sentences. Albert read 8 paragraphs, so each paragraph must have 6 sentences in it to match the
expression.
Next, solve the expression to find how many total sentences Albert read.
So, Albert read 48 total sentences.
5.
There are four packs of colored pencils. There are eight colored pencils in each pack.
The equal packs of colored pencils represent equal groups, so multiply 4 and 8 to find the total number of colored
pencils Rey has.
So, Rey has 32 colored pencils.
6.
Hector has a total of 27 seeds. The seeds are split into 3 equal rows. Divide to find how many seeds Hector planted
in each row.
27 seeds divided by 3 equal rows is 9 seeds in each row.
7.
There are three rows shaded, which represents three packages of glue sticks. There are four columns shaded,
which represents four glue sticks in each package.
To find the total number of glue sticks Nora has, multiply 3 and 4.
So, Nora has 12 glue sticks.
8.
The expression shows 7 times 4. This means that there are 7 groups of 4 objects. Each bag Colin filled is a group of
cookies. Colin filled 7 bags, so each bag must hold 4 cookies to match the expression.
Find the value of the expression to find how many total number of cookies Colin put into bags.
So, Colin put 28 total cookies into bags.
9.
To find the story problems that Brett could be trying to answer, start by breaking down the expression.
A multiplication expression shows groups of objects. So, the expression Brett wrote,
number of objects in 6 groups of 9 objects.
, is looking for the total
All of the story problems written below can be answered using Brett's expression.
There are 6 bags of candy and each bag holds 9 pieces of candy. How many pieces of candy are there in
all?
Julie has 6 cans of pencils. Each can holds 9 pencils. How many pencils does Julie have in all?
Greg filled 6 boxes with 9 cookies each. How many cookies did Greg put into the boxes?
10. This addition problem is adding five 9s. Its sum equals 45.
Another way to solve this is to multiply 5 times 9.
5 × 9 = 45